and slice.

the interfaces defined in import.h.

Since there's also an imghdr.py file, I propose to make sndhdr.py the
official one.  For compatibility, whatsound.py imports * from
sndhdr.py.

	$exec_prefix/lib/python$VERSION/site-packages by default.

Could be useful for an install target in Misc/Makefile.pre.in.

"None"; this should be equivalent to sys.exit(0).

with an instance of a derived class B would really raise an A, not a
B.  Since Barry fixed this anomalous behaviour, I though I might as
well fix the test!  (Hmm, Barry, did you not run the tests or did you
miss that test_opcodes failed?)

(1) Use PyErr_NewException("module.class", NULL, NULL) to create the
    exception object.

(2) Remove all calls to Py_FatalError(); instead, return or
    ignore the errors -- the import code now checks PyErr_Occurred()
    after calling a module's init function, so it's no longer a
    fatal error for the initialization to fail.

Also did some small cleanups, e.g. removed unnecessary test for
"already initialized" from initfpectl(), and unified
initposix()/initnt().

I haven't checked this very thoroughly, so while the changes are
pretty trivial -- beware of untested code!

plat-win, get rid of test (which is now a package).

tstate swapping.  Only the acquiring and releasing of the lock is
conditional (twice, under ``#ifdef WITH_THREAD'' and inside ``if
(interpreter_lock)'').

was a single '-'.  Thanks to Andrew Kuchling.

causes ugly noises under Windows.

instance's class is a subclass of this, then use the instance's class
as the exception type.

again (Mark Hammond is the cause of all this).

Use "re" module, making it threadsafe.

first.  Don't store the traceback as a local variable, to avoid
circular references.